The dictionary at the Lost and Found ______ be Tim's,because his name is on its cover.( )
can
mustn't
can't
must
Look! Miss Wang is carrying a heavy box. Let's go to help .
My little brother likes to jump up and like a monkey.
Climbers is an exciting movie. I'm going to it.
July is the seventh of the year.
Carol often goes to school bike. It's good for her health.